Turret-head for lathes



(No Model.) 2 Sheets-Sheet l.

O. G. GUSS.

TUREET HEAD FOR LATHE'S;

No. 387,559. Patented Aug. 7, 1888.

qw iltwem I (No Model.) 2 Sheets-Sheet 2.

0. G. GUSS.

TURREI HEAD FOR LATHES. No. 387,559. Pa'pe'ntedAug. '7, 1888.

UNITED STATES PATENT Grinch.

ORRANGE G. GUSS, OF LIMA, OHIO.

TURRET-HEAD FOR LATHES.

SPECIFICATION forming part of Letters Patent No. 387,559, dated August 7, 1888.

(No model.)

To all whom it may concern.-

Be it known that LORRANGE G. (loss, a citizen of the United States, residing at Lima, in the county of Allen and State of Ohio, have invented certain new and useful Improvements in Turret-Heads for Lathes; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art towhieh it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention has for its object to provide a novel construction in turret-blocks to be used in connection with lathes; and the nature thereof consists in providing the tool-post block on the carriage of the lathe with a rotary head adapted to receive the necessary tools,and means whereby the said tools may be brought and secured in their proper positions for the use thereof, and other details in the construction, as will be hereinafter fully described.

In the accompanying drawings, in which corresponding parts are designated by similar letters and indicate like parts in the several figures, Figure 1 is a side elevation of my complete invention. Fig. 2 is a vertical section thereof. Fig. 3 is a top plan view, and Figs. 4 and 5 are detail views.

Referring to the drawings, A represents the tool-post block on the carriage of an enginelathe, having formed therein a space or open ing, a, for the admission of the center post, B. This post is provided with a square head, I), which fits in the corresponding space,a, formed in the post'block, and upon which the cylinder 0 is placed.

The cylinder 0 is provided with an annular flange, a, near its lower end, which rests upon the upper surface of the block A, and is also provided with an extension, 0', which extends somewhat below the annular flange, and is slotted to receive the pivotal end of the thuinb lever D. This lever is provided with a lug, d, hinged or pivoted at or near its center, and which extends through the circular opening 0 in the annular flange 0, being always held in an upward position by the coilspring (1.

Upon the cylinder 0 is placed the turrethead E, and is adapted to be rotated upon it.

The turret E is composed of a hub, E, the lower surface of which rests upon the annular flange c of the cylinder 0, and is provided with four holes, 6, for the admission of the lug d of the thumblever, whereby the head is rotated and held firmly in position. From the hub E are formed four arms, 0, upon which an annular rim, E", is formed, and is provided with four semicircular openings, 6 upon its upper surface, over which the clamp pieces or caps F are securely fastened. Upon thelower surface of these clamp pieces or caps are formed semicircular openings or grooves f, corresponding to those formed on the surface of the annular rim, thereby providing circular openings, within which the tools are inserted and held by means of the screws f, To the upper end of the center post, B, are formed screw-threads for receiving a nut, b, which holds the cylinder 0 securely in place upon the tool-post block. Upon the upper end of the cylinder 0 are also formed threads for receiving the friction-nut G, which is provided with ahandle, g, by means of which the turret is held firmly in position upon the cylinder 0. A frictionwasher, H, is placed between the frietion-nut G and the upper edge of thehub-extension of the turret-head. By this construction it will be seen that the different tools necessary to accomplish the work are held firmly in position between the annular rim and clamp-pieces, and are brought in connection with the work simply by pressing on the thumb-lever, which allows the lug secured thereto to free itself from the locking position it was normally in and catch automatically in the next opening, which is on a direct line with the tool.

Having described my invention, I claim and desire to secure by Letters Patent In a turret-head for lathes, the combination of the tool-post block A, a center post, 13, a cylinder surrounding the same, and a flange formed upon the bottom thereof, a lower extension having a recess, a thumb-lever, 1), pivoted therein, a lug pivoted to the said lever and projecting through a hole in the said In testimony whereofIai'fixmy signaturein flange, a coi1-spring d, surrounding the said presence of two witnesses.

lug, a turret, E, surrounding the cylinder 0,

having recesses e in the lower edge thereof for ORRANGE G. JUSS. receiving the said lug, and a nut G, having it handle, 9, screwed upon the cylinder G, for se- Witnesses:

curing the turret in position, as and for the FRANCIS M. AsH'roN,

purpose described. J OHN R. ASHTON. 

